Energy Efficiency Upgrades: Code Requirements and Rebates

Energy efficiency upgrades reduce utility costs while improving comfort and helping the environment. California's aggressive energy codes and generous incentive programs make now an ideal time to upgrade your home's efficiency.

Title 24 Energy Standards

Triggered Compliance

Major renovations must meet current standards:

• HVAC system replacements
• Major reroof projects
• Room additions
• Window replacements
• Significant alterations

Performance vs Prescriptive

• Prescriptive: Follow specific requirements
• Performance: Model overall energy use
• Trade-offs possible with performance method
• Professional modeling often required

Key Upgrade Areas

Insulation Improvements

Current minimums (Climate Zone 3):

• Attic: R-38 minimum
• Walls: R-15 in 2x4, R-19 in 2x6
• Floors: R-19 over crawl spaces
• Air sealing: Critical for effectiveness

Window Upgrades

• Maximum U-factor: 0.30 most zones
• SHGC requirements vary by orientation
• NFRC certification required
• Consider whole-house replacement

HVAC Efficiency

• Minimum SEER ratings increasing
• Proper sizing crucial
• Duct sealing often required
• HERS verification for credit

Available Rebates and Incentives

Federal Tax Credits

• Heat pumps: Up to $2,000
• Insulation: 30% up to $1,200
• Windows/doors: 30% up to $600
• Home energy audit: 30% up to $150

Utility Rebates

Varies by provider, typically includes:

• HVAC upgrades: $500-$3,000
• Insulation: $0.15-$1.00 per sq ft
• Smart thermostats: $50-$120
• Heat pump water heaters: $1,000-$3,500

State Programs

• TECH Clean California: Heat pump incentives
• Energy Upgrade California: Whole-house
• Low-income weatherization: Free upgrades
• Property Assessed Clean Energy (PACE)

Whole-House Approach

Energy Audit First

• Identifies biggest opportunities
• Blower door test for air leaks
• Infrared imaging for insulation gaps
• Duct leakage testing
• Prioritized recommendations

Typical Upgrade Package

1. Air sealing and weatherization
2. Insulation improvements
3. HVAC system upgrade
4. Duct sealing and insulation
5. Smart thermostat installation

Heat Pump Revolution

Why Heat Pumps?

• 300-400% efficient
• Heating and cooling in one
• Significant rebates available
• Reduces carbon footprint
• Lower operating costs

Types Available

• Air source (most common)
• Mini-splits (ductless)
• Ground source (geothermal)
• Heat pump water heaters

Solar + Storage Integration

Complementary Technologies

• Solar generates clean power
• Batteries provide backup
• Heat pumps use solar efficiently
• EV charging integration
• Smart home controls

ROI and Payback

Typical Payback Periods

• LED lighting: 1-2 years
• Insulation: 3-5 years
• HVAC upgrade: 5-8 years
• Windows: 10-20 years
• Solar panels: 5-7 years

Additional Benefits

• Increased home value
• Improved comfort
• Better indoor air quality
• Reduced maintenance
• Environmental impact

Common Mistakes

• Upgrading HVAC without duct sealing
• Missing available rebates
• Improper equipment sizing
• Ignoring air sealing
• Not getting multiple bids

Getting Started

1. Schedule professional energy audit
2. Review recommendations and prioritize
3. Research available incentives
4. Get quotes from qualified contractors
5. Apply for rebates before starting
6. Complete upgrades with permits
7. Submit for final rebates

"Our whole-house upgrade cut energy bills by 60%. Between rebates and tax credits, we recovered 40% of costs immediately, and the comfort improvement is amazing."

- Elena R., Pleasanton Homeowner

Energy efficiency upgrades offer immediate benefits and long-term savings. With current incentives and California's mild climate, most upgrades pay for themselves while significantly improving home comfort and value.